Webgrind 1.5 relies on user input to display a file, which lets anyone view files from the local filesystem (that the webserver user has access to) via an index.php?op=fileviewer&file= URI. NOTE: the vendor indicates that the product is not intended for a "publicly accessible environment.

Absolute path traversal vulnerability in Webgrind 1.0 and 1.0.2 allows remote attackers to read arbitrary files via a full pathname in the file parameter to index.php.